Fix .flake8

Author: Christian Knittl-Frank

.flake8

@@ -1,7 +1,7 @@
 [flake8]
 max-line-length = 88
 extend-ignore =
-    E203  # "Whitespace before ':'" - not PEP-8 compliant
-    E501  # "Line too long (82 >= 79 characters)"
+    E203
+    E501
 per-file-ignores =
     __init__.py:F401